Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing our new design; and,

FIG. 2 is a front detail view thereof.

The broken line showing of the display screen or portion thereof is for the purpose of illustrating environment and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a display screen or portion thereof with icon, as shown and described. 